| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-171-3983 (011713983) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com, Martin Baker Aircraft Co Ltd |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| NAS1578C3R8 | national aerospace standards com | screw close tolerance | 80205 | RFQ |
| P34982 | martin baker aircraft co ltd | screw close tolerance | u1604 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.338 INCHES MINIMUM AND 0.388 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM |
| AASK | HEAD STYLE | PAN NO. 2 |
| AASL | HEAD DIAMETER | 0.360 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| ANEE | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES THREADS |
| FEAT | SPECIAL FEATURES | INTERNAL DRIVE RIBBED |
| MATT | MATERIAL | IRON ALLOY 660 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS1578 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Components Related to NSN - 5305-01-171-3983, 5305011713983 | ||||
| 5315-01-076-2969 (5315010762969) | 5325-00-543-3429 (5325005433429) | 5340-00-196-3675 (5340001963675) | 5360-01-424-6607 (5360014246607) | |
| 5310-00-084-4232 (5310000844232) | 5365-01-532-4588 (5365015324588) | 5340-01-654-3113 (5340016543113) | 5305-01-143-8635 (5305011438635) | |
| 5340-01-332-8256 (5340013328256) | 5360-00-558-5147 (5360005585147) | 5306-01-234-3071 (5306012343071) | 5305-01-175-6588 (5305011756588) | |
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